Suradi, Mohamad Shafiq Haikal, and Khairul Anuar Mohamad. “Design and Development of Soil Battery System for Sustainable Energy Storage”. Evolution in Electrical and Electronic Engineering, vol. 4, no. 2, Oct. 2023, pp. 679-86, https://penerbit.uthm.edu.my/periodicals/index.php/eeee/article/view/12702.